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Structural Vibration Analysis in Turbocharger-Exhaust Systems
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English
Abstract
Engine running tests and excitation tests were performed to reveal the vibration behavior in a turbocharger-exhaust system related to the turbocharger's operating sound. The operating sound was caused by the resonant vibration excited by the unbalanced inertia force of the rotor. The turbocharger-exhaust system had six resonant frequencies in the operating speed range of the rotor. At resonant speeds, the whole turbocharger was translating or rotating due to bending and torsional deflection of the exhaust manifold.
Based on the test results, the vibration behavior could be well simulated by a rigid body-spring model with six degree of freedom. Furthermore, the model was used to analyze the relation between the stiffness of the exhaust manifold and the vibration level. Increasing the stiffness of the exhaust manifold was effective in sufficiently reducing the vibration and sound.
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Authors
Citation
Inagaki, M., Yoshikawa, K., Wakabayashi, M., and Takama, K., "Structural Vibration Analysis in Turbocharger-Exhaust Systems," SAE Technical Paper 931318, 1993, https://doi.org/10.4271/931318.Also In
References
- Vance J. M. “Rotordynamics of Turbomachinery”
- Nakagawa E. et al. “Unbalance Vibration of a Rotor-Bearing System Supported by Floating-Ring Journal Bearing,” JSME Journal 75 642 1972 999 1007
- Kurasawa M. et al. “Turbocharger for Small Passenger Cars,” IHI Engineering Review 16 1 1983 59 64
- Ford D. M. et al. “Engine Noise Reduction by Structural Design Using Advanced Experimental and Finite Element Method,” SAE Paper 790366 1979
- Goto Y. et al. “Experimental Analysis of Power Plant Vibration by Shaker Test” SAE Paper 911069 1991
- Himelblau H. et al. “Vibration of a Resiliently Supported Rigid Body,” Shock and Vibration Handbook
- Bishop R. E. D. et al. “Matrix Analysis of Vibration,” Cambridge University Press
- Aoki A. et al. “Inertial Properties of Motorcycles,” JARI Technical Memorandum 62 1977